Lantronix SISPM1040-3166-L Web User Guide Rev G PDF 14.13 MB - Page 85

Unaware, C-Port, S-Port, S-Custom-Port, enabled, disabled, Tagged and untagged, Tagged Only,

Page 85 highlights

Transition Networks SISPM1040-3xxx-L Web User Guide Port VLAN : Determines the port's VLAN ID (a.k.a. PVID). Allowed VLANs are 1 - 4095, the default is VLAN 1. On ingress, frames get classified to the Port VLAN if the port is configured as VLAN unaware, the frame is untagged, or VLAN awareness is enabled on the port, but the frame is priority tagged (VLAN ID = 0). On egress, frames classified to the Port VLAN do not get tagged if Egress Tagging configuration is set to untag Port VLAN. The Port VLAN is called an "Access VLAN" for ports in Access mode and "Native VLAN" for ports in Trunk or Hybrid mode. Port Type : Ports in hybrid mode allow for changing the port type, that is, whether a frame's VLAN tag is used to classify the frame on ingress to a particular VLAN, and if so, which TPID it reacts on. Likewise, on egress, the Port Type determines the TPID of the tag, if a tag is required. Unaware: On ingress, all frames, whether carrying a VLAN tag or not, get classified to the Port VLAN, and possible tags are not removed on egress. C-Port: On ingress, frames with a VLAN tag with TPID = 0x8100 get classified to the VLAN ID embedded in the tag. If a frame is untagged or priority tagged, the frame gets classified to the Port VLAN. If frames must be tagged on egress, they will be tagged with a C-tag. This is the default setting. S-Port: On ingress, frames with a VLAN tag with TPID = 0x8100 or 0x88A8 get classified to the VLAN ID embedded in the tag. If a frame is untagged or priority tagged, the frame gets classified to the Port VLAN. If frames must be tagged on egress, they will be tagged with an S-tag. S-Custom-Port: On ingress, frames with a VLAN tag with a TPID = 0x8100 or equal to the Ethertype configured for Custom-S ports get classified to the VLAN ID embedded in the tag. If a frame is untagged or priority tagged, the frame gets classified to the Port VLAN. If frames must be tagged on egress, they will be tagged with the custom S-tag. Ingress Filtering : Hybrid ports allow for changing ingress filtering. Access and Trunk ports always have ingress filtering enabled. If ingress filtering is enabled (checkbox is checked), frames classified to a VLAN that the port is not a member of get discarded. If ingress filtering is disabled, frames classified to a VLAN that the port is not a member of are accepted and forwarded to the switch engine. However, the port will never transmit frames classified to VLANs that it is not a member of. Ingress Acceptance : Hybrid ports allow for changing the type of frames that are accepted on ingress. Tagged and untagged : both tagged and untagged frames are accepted. Tagged Only : Only tagged frames are accepted on ingress. Untagged frames are discarded. Untagged Only : Only untagged frames are accepted on ingress. Tagged frames are discarded. Egress Tagging : Ports in Trunk and Hybrid mode may control the tagging of frames on egress. 33763 Rev. G https://www.transition.com Page 85 of 496

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Transition Networks
SISPM1040-3xxx-L Web User Guide
33763 Rev. G
Page
85
of
496
Port VLAN
: Determines the port's VLAN ID (a.k.a. PVID). Allowed VLANs are 1 - 4095, the default is VLAN 1.
On ingress, frames get classified to the Port VLAN if the port is configured as VLAN unaware, the frame is
untagged, or VLAN awareness is enabled on the port, but the frame is priority tagged (VLAN ID = 0).
On egress, frames classified to the Port VLAN do not get tagged if Egress Tagging configuration is set to
untag Port VLAN.
The Port VLAN is called an "Access VLAN" for ports in Access mode and
Native VLAN
for ports in Trunk or
Hybrid mode.
Port Type
: Ports in hybrid mode allow for changing the port type, that is, whether a frame's
VLAN tag is used to classify the frame on ingress to a particular VLAN, and if so, which TPID it
reacts on. Likewise, on egress, the Port Type determines the TPID of the tag, if a tag is
required.
Unaware
: On ingress, all frames, whether carrying a VLAN tag or not, get classified to the Port VLAN, and
possible tags are not removed on egress.
C-Port
: On ingress, frames with a VLAN tag with TPID = 0x8100 get classified to the VLAN ID embedded in
the tag. If a frame is untagged or priority tagged, the frame gets classified to the Port VLAN. If frames
must be tagged on egress, they will be tagged with a C-tag. This is the default setting.
S-Port
: On ingress, frames with a VLAN tag with TPID = 0x8100 or 0x88A8 get classified to the VLAN ID
embedded in the tag. If a frame is untagged or priority tagged, the frame gets classified to the Port VLAN.
If frames must be tagged on egress, they will be tagged with an S-tag.
S-Custom-Port:
On ingress, frames with a VLAN tag with a TPID = 0x8100 or equal to the Ethertype
configured for Custom-S ports get classified to the VLAN ID embedded in the tag. If a frame is untagged
or priority tagged, the frame gets classified to the Port VLAN. If frames must be tagged on egress, they
will be tagged with the custom S-tag.
Ingress Filtering
: Hybrid ports allow for changing ingress filtering. Access and Trunk ports always have ingress
filtering enabled.
If ingress filtering is
enabled
(checkbox is checked), frames classified to a VLAN that the port is not a member of
get discarded.
If ingress filtering is
disabled
, frames classified to a VLAN that the port is not a member of are accepted and
forwarded to the switch engine. However, the port will never transmit frames classified to VLANs that it is not a
member of.
Ingress Acceptance
: Hybrid ports allow for changing the type of frames that are accepted on ingress.
Tagged and untagged
: both tagged and untagged frames are accepted.
Tagged Only
: Only tagged frames are accepted on ingress. Untagged frames are
discarded.
Untagged Only
: Only untagged frames are accepted on ingress. Tagged frames are
discarded.
Egress Tagging
: Ports in Trunk and Hybrid mode may control the tagging of frames
on egress.